Mathematics
Senior High
解答の3行目から4行目の式変形の仕方を教えてください
お願いします🤲🙇♂️
%D
8. 級数)
2-47-1 - 37-1
127-1
(1)この級数の第n部分和 S,を求めよ。
I=U
について,以下の問に答えよ、(各5点)
この級数の第n部分和 S, は
2.4k-1 - 3k-1
“S
3="s
I=Y
=2
I-Y
3
1=Y
ーY
=2-
I
uE
I
1-
()マ- ()マ
I
9
3
T
I
11
1-uE
34n-1
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